<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,intial-scale=1">
    <title>页头</title>

    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!--<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">-->
    <!--下拉菜单需要引入js-->
    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
</head>
<body>
   <div class="container">
       <h5>1.基本实例(.page-header)</h5>
       <!--会在底部绘制一条分割线;h系列标签均可以使用;-->
       <h1 class="page-header">Example page header</h1>


       <br>
       <br>
       <h5>2.与small标签联合使用</h5>
       <h1 class="page-header">Example page header <small>Subtext for header</small></h1>

   </div>
</body>
</html>